Method of automatic communications recovery

Details Method of automatic communications recovery Method of automatic communications recovery

1993-07-16

1995-01-03

Chin, Wellington

Multiplex communications

Wide area network

Packet switching

371 82, 371 112, H04L 122

Patent

active

053792785

ABSTRACT:
In a local area network system having redundant communication media and a plurality of nodes, each node is connected to the redundant communication media. Each node is capable of communicating with each other node in accordance with a predetermined protocol via the redundant communication media. Further, each node is capable of disconnecting from the redundant communication media when an error in communications is detected. A method of automatically reconnecting the node to the redundant communication media after the node disconnects from the redundant communication media comprises the following steps. When a faulty condition is detected, the node disconnects itself from the redundant communication media. Internal testing of the node is then performed. If the internal testing passes, the node attempts to reconnect itself to the redundant communication media. If the attempted reconnect is unsuccessful, the node waits a first predetermined period of time and proceeds to the step of repeating the internal testing. If the attempted reconnect is successful, normal communications by the node are resumed over the redundant communication media thereby achieving an automatic reconnect without requiring any operator or manual intervention.

REFERENCES:
patent: 4700344 (1987-10-01), Kaino et al.
patent: 4701910 (1987-10-01), Ulug
patent: 5079759 (1992-01-01), Kajiyama
patent: 5111460 (1992-05-01), Botzenhardt et al.
patent: 5200949 (1993-04-01), Kobayashi

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